You're trying to determine whether to expand your business by

building a new manufacturing plant. The plant has an installation cost

of $$12\mathrm{.}9$ million, which will be depreciated straight$-$line to zero over its

four$-$year life. If the plant has projected net income of $$1,944,300,$

$$1,997,600,$ $$1,966,000,$ and $$1,419,500$ over these four years,

respectively, what is the project's average accounting return $($AAR$)?$

$($Do not round intermediate calculations and enter your answer as a

percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

Average accounting return